通过动态剪切流变试验,结合时温换算法则得到沥青混合料全温全频域内的主曲线;应用相关的计算方法,获得连续松弛时间谱的解析表达式,并研究松弛时间谱在沥青混合料性能研究方面的应用.结果表明,动态剪切流变试验能够有效获得连续松弛时间谱,连续松弛时间谱能够为沥青混合料的工程性能研究提供有利手段.
Dynamic shear rheological tests were carried out and the time-temperature shift principle was adopted to obtain the master curve of asphalt mixture in the whole-temperature whole-frequency range. Then, some correlative calculations were performed to deduce the analytical expression of the continuous relaxation time spectrum. Moreover, the applications of the relaxation time spectrum to the investigation of asphalt mixture performance were discussed. The results indicate that the dynamic shear rheological test helps to obtain the continuous relaxation time spectrum suitable for the research on the pavement performance of asphalt mixture.